Well! I freely admit, I am a woman of business.

I love hard work; I enjoy hard work.
The excitement does me good.

I am so accustomed and inured to hard work that I don't know what fatigue is." We murmured that it was very astonishing and very gratifying, or something to that effect.

I don't think we knew what it was either, but this is what our politeness expressed.
"I do not understand what it is to be tired; you cannot tire me if you try!" said Mrs.Pardiggle.

"The quantity of exertion (which is no exertion to me), the amount of business (which I regard as nothing), that I go through sometimes astonishes myself.